Contact area and pressure changes of patellofemoral joint during stair ascent and stair descent.

ABSTRACT:

Purpose

To investigate the differences of patellofemoral joint pressure and contact area between the process of stair ascent and stair descent.

Methods

The finite element models of 9 volunteers without disorders of knee (9 males) to estimate patellar cartilage pressure during the stair ascent and the stair descent. Simulations took into account cartilage morphology from magnetic resonance imaging, joint posture from weight-bearing magnetic resonance imaging, and ligament model. The three-dimension models of the patella, femur and tibia were developed with the medical image processing software, Mimics 11.1. The ligament was established by truss element of the non-linear FE solver. The equivalent gravity direction (-z direction) load was applied to the whole end of femur (femo

SUBMITTER: Wang X 

PROVIDER: S-EPMC10537124 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature